satellite drifter technology dr. sergey motyzhev
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Satellite Drifter Technology Dr. Sergey Motyzhev. Entity of the Drifter Technology. Oceanography Sea currents Heat transfer Ecohydrocontrol Water exchange Modeling. Hydrometeorology Weather prognosis Climate variability Maritime safety Fishing Applied goals. Data applications - PowerPoint PPT PresentationTRANSCRIPT
Satellite Drifter Technology Dr. Sergey Motyzhev
Entity of the Drifter TechnologyMeasurable Parameters
Speed and direction of currentsSea surface temperature
Vertical temperature profilesAir temperature
Air pressureSea surface waves
Speed and velocity of wind
OceanographySea currents
Heat transfer
Ecohydrocontrol
Water exchange
Modeling
HydrometeorologyWeather prognosis
Climate variability
Maritime safety
Fishing
Applied goals
Data applications
International oceanographic scientific programs
Weather forecasting
Climate variability
Black Sea Buoy Program
Components of the Global Observational System
Tide Gauge Network 45 % complete 3˚x3˚ Argo Profiling Float Array 25% complete 5˚x5˚ Surface Drifting Buoy Array 35 % complete Moored Buoy Existing Planned Ocean Reference Station Existing Planned High Resolution XBT and Flux Line Existing Planned Frequently Repeated XBT Line Existing Planned Carbon Inventory & Deep Ocean Line Global Survey @ 10 years
Sea Surface Temperature, Sea Surface Height, Surface Vector Wind, and Ocean Color from Space
2002 2010
WOCE SVP-B Drifting buoy
Surface float
Revision 2 – May 2005
Tether
Drogue
Polyurethane
carrotsMain differences between this
and past kind of buoys• 31-34 cm surface float• Smaller of drogue diameter and height
Creation of drifter networks Areas of interests of Action Groups
ProjectE-SURFMAR
Black Sea Buoy Program82 drifters were deployed from 1999 to 2007
Ship deployments of drifters in the Black Sea
Black Sea Buoy Program
Yacht "Petr Veliky" Scientific boat Akademik
Commercial boat “Sevastopol-1”
A drifter after deployment
Black Sea Buoy Program
Oceanography Hydrometeorology
1. Circulation
2. Heat transfer
3. Pollutions
4. Water exchange
5. Modeling
1. Weather forecasting
2. Maritime safety
3. Climate variability
4. Applied problems
Goals
Calibration and validation of the remote sensing observations
Main results of the Black Sea drifter study
Investigation of mesoscale processes
Main results of the Black Sea drifter study
Sevastopol anticyclone
Батумский вихрь
Main results of the Black Sea drifter study
Batumi vorticity
Main results of the Black Sea drifter study
Increasing of space-time resolution of measurements
15м
35м
60м
80м
0м
10м
12м
15м
20м
25м
30м
35м
40м
45м
50м
55м
60м
65м
70м
75м
80м
T e m p e r a t u r e s e n s o r s
T e m p e r a t u r e s e n s o r s
D e p t h s e n s o r s
Evaluation of SVP-BTC drifter with 80-m temperature chain
80-m SVP-BTC in comparison with 60-m SVP-BTC
16 temperature sensors
Depth sensor at the end of chain
3 additional depth sensors at 15, 35, 60m
Temperature sensors
Calibrated Temperature Range: 0 to 40 СSensors: DS18B20 (Dallas Semiconductor)Accuracy: +/-0,2 СSensitivity: 0,04 СMeasurement Reading Time: 20 s (for 10
sensors)Number of sensors: 10Time Constant: 100 s (in stirred water)Levels: 12,5; 17,0; 22,0; 27,0; 32,0; 37.0; 42,0; 47,0; 52,0; 57,0 m
Depth sensor
Calibrated Pressure Range: 0 to 1,0 MPaSensor: D0,6 (Orlex, Russia)Accuracy (depth measuring): +/-0,5 mSensitivity (depth measuring): 0,1 mMeasurement Reading Time: 3 s
SVP-BTC drifter with a thermistor chain
Trajectories of buoys(23.08.04 – 14.02.05)
Goals of 2004-2005 experiment in the Black SeaTesting of new drifter and validation of remote sensing data.
SVP-BTC drifter with thermistor chain
SVP-BTC drifter with thermistor chain
Graphical fragment from
the drifter's sensors
(SVP-BTC ID 49169)
SVP-BTC60 №49169
SVP-BTC60 №34860
Tracks and data sets during cooling and warming of water inside active layer
SVP-BTC60 №№49169, 34860
SVP-BTC drifter with thermistor chain
Investigation of the Cold Intermediate Layer in the Black Sea by means of drifter with temperature chain and GPS receiver
Cold intermediate layer
SVP-BTC drifter with thermistor chain
The results of temperature measurements with 80-m SVP-BTC drifter
Mixed layer
Vertical profile Cold intermediate
layer
Evaluation of SVP-BTC drifter with 80-m temperature chain
Participation in the International drifter activity
Study of the tropical storm cycles by means of "Smart Buoys"
The issue of “Smart Buoy” idea
Transformation of buoy for not only datacollection and transfer to user, but also dataanalysis by its own processing possibilities tochange the buoy status or goal of application
Parameter SVP-BSVP-BT
(Storm buoy)AP resolution
(hPa)0.1 0.1
AP dynamic range (hPa)
850.0 to 1054.7 850.0 to 1054.7
APT dynamic range (hPa)
-25.5 to +25.6 -25.5 to +25.6
Interval between
samples (min)60 30
AP measurement
Standard algorithm
40 AP samples (40 s).
Median of the lowest 3 points.
Median within 1 hPa
“Storm” algorithm
10 standard measurements within 15 minutes with 90 sec interval.
Average of 10 medians
Rank for data transfer
1 5 (0, 1, 2, 3, 4)
SVP-BT drifter (Storm Buoy)-Second generation, 2004
Tz sensor at the end of tether (12.5 m)
Goal: Investigation of the heat processes in the active layer
SVP-BT (Typhoon ) drifter
Schedule deployment of buoys
9-10 July 2003
40432 4043440432
40429 40430 40433
SVP-BT drifter (Storm Buoy)-Second generation, 2004
Registration of the hurricane Frances in August-September 2004
SVP-BT drifter (Storm Buoy)-Second generation, 2004
Registration of the hurricanes Katrina and Rita (August-September 2005)
AdvantageHigh reliability of the AP channel in storm
conditions
Iridium Pilot Project (2006-2008)
Global coverage
Two-link communication
Real-time communication
Hourly data at round hours
Low cost of traffic
Coordination with Meteo-France
SVP-B mini
Iridium+GPS
Iridium Pilot Project (2006-2008)
Iridium Pilot Project (2006-2008)